Posted by: Darth Vader

You CAN upgrade the SSD, but ASUS uses a proprietary mSATA interface. Go look up Macbook Air vs. Asus Zenbook SSD mSATA interface; I saw an image that compared the two SSDs and they are physically different both in size and pin layout. So yes, it is removable and upgradeable, but you will have to pay a premium for the proprietary SSDs.

Posted by: Allen.Ngo

Can the SSD be upgraded from 128GB to 256GB SSD during service maintenance? I really would not be satisfied with the memory that it is coming with at the 1K range. Is there a possibility of upgrade in future if one wishes? I hope SSD is not soldered to the board as you see in case of the RAM....

RAM is not end-user upgradeable. The SSD is removable and can be upgraded as shown in the images.

Posted by: Mohit

Can the SSD be upgraded from 128GB to 256GB SSD during service maintenance? I really would not be satisfied with the memory that it is coming with at the 1K range. Is there a possibility of upgrade in future if one wishes? I hope SSD is not soldered to the board as you see in case of the RAM....

Posted by: MThomsen

According to asus in Denmark the sandisk is the prefered ssd for the ux31a !!!! Personally I think this is creazy since the SSD is so important for the user experience. But there you are, apparently the sandisk is what you can expect if you order a ux31a, at least in Denmark.

Posted by: house

I own a UX31, the old Sandy Bridge CPU version with ordinary screen. 4G Ram is enough with super fast SSD disk. You had to use maximum power to run Photoshop or even office 2010 smoothly. I use lightroom to process raw images from my DSLR. The CPU can auto boost to 2.4G, but it can only lasts 10 to 20 minutes. Enough for me to process a dozen of photos or more.